Went to see it last night. I heard it panned so much I expected to be bored but "I'm alright!" What a hoot! I think they could have done it in that nasty Volks van from Little Miss Sunshine and it would have been just as good (and saved Little Miss Sunshine). It's all about the road trip. The theatre was full of old pharts and their mauls/one ups and they never quit laughing.
Good clean fun. Come to think of it, never heard the f bomb all night either.